- Download software can only be used on 1 Wii U per 1 USB media
- Download software can be saved to internal memory or USB media
- Download software can't be saved to the SD card
- Cannot play downloaded Wii U games on another Wii U

Not exactly the kind of news we wanted to hear. Looks like an external hard drive is going to be the better way to go. Thanks to all that sent this in!